I don't know what all years they did "all of what" but there was also a phoney deal (on some?) where a vacuum relay hookup turned on the fender mount turn signal indicator--maybe just the left one? when your vacuum dropped so much
Yeah, I was prepping new cars at a dealer in the early to mid 70's. Those vacuum switches (not phony BTW) were hooked to the left outside turn signal light indicator mounted on the fender. It let you know when you stepped on the throttle to hard. lol
